Fastener



- Nov. 14, 1944.

C. M. BLODGETT FASTENZZR Filed Dec. 20, 1

INVENTQRZ 'm/aawcsM 54,0

ATTORNEY A Patented Nov. 14, 1944 WGlaims.

his inven io re ates-t tem ndexip systems nd haslini ea i as e tsina tic la ef r ne not thus limited.

Cards of his yne ha ev soa ed black, met

o at at mentsi r indexi cardsa th ue fit 15 abs ther on ne: onea l ai andeh 'df he blects t tlzi fl vent ca s the. provision, oi n; attachment or tab for an index card in which,

with a view both to economy of tructupe and timeconsuined in the-, assem b ling, operation, the

heet metal o h l abisiu lizsd e e at ach:

ing. function.

Az e u fi o th sn el iiel is a erta n tenors;

io with i e n-l xiga @r-sumundinsn r s, the erforation being made the.

nature of prongs or pointed intggralprojectigns. prov d n PFQHQS -01 qilintu let type, have found, in r practices-that: the p ri e ai s isplacsm et ait ass mbly; an th t said Dl911g1$;,, asten ge ements, a e easily provided in the. metal stock, accordance withntwgalnabilities, in 5.11185 dividua tabl eiorolips, this being: as to springing qualitiesor fliecedom from them; sheet metal Without such qualities being ordinarily suitable.

In formin rthe perforation; in accordance w-ith another object vof my" invention, a five sided punch :OlllWhiGh .bhe*faGBt -.O1 flat surfaces extending vfrom -theupoint llimitedly along the stem, are of a predetermined area or length; On strik nst-the punch-into the sheet metal the-aforesaidfixaeprongs are .iormedi Still. another objector the invention; connected with the-foregoing, is the proyisio'nof" a one-piece clip 'or-tab-ofthis nature; with which, as over former well known types; the' att function, or assembly withthecardjniay w formed in a -brie'f-or reduced-beside? t e.

Yet-' -anotherwieatum of the ir vention manner: in h e s et ing. pnssaie r.. through-the card and: attachedj thereto. The perforation in the front and back fljaig ges portions of -thesheet metal are stagge Wi or ofiset, r v fifiwh othe an v1. i't ls o n ai l ntiyflange t ctasla anvi a ainst whi h po nts orthe iqma sot the b skffl nee me j stt sals a ztv he turn d :fi steu d .then upwardly inton.one iacepf.the

n thesamamaene e n,

sheetmeta and; the ndar as h reinmef r shtabe n inthe:

oratinggqualitiesa thereof 05a supe io naturethatthey are er.- referred to, .the.v sheet;

With-this inveni i as 1s seem-PS1 n ractice .t wardlyw a es 1 ne as well ase e i h ghf l'h inaften appear, the intie ove qsmstrnqiwn a tialffeatufes of I which are he even messereinfully disclosed,

provd clip in positionqnen index cardmem- Fig; 2 is a back view-thereof;

' Fig! sis-an edge view of theassembledstruc- Fig. 5 is an an-lagged section on theline 5 -5;

i sis Mme plsevi we i s s w n Fig. 7 is afurtherenlargedsection on the line I closed; arrangementincludesa sheet-metal member; having alfrontwlplatesortfiange, I 0 and aiba-ck plate I l, the sheet being formed with a transverse.

bentiuncture 12; m .theiin'stant case Ithe .fitont plate!!! .hasptherei-n anJopening4l3 toirender visible 1an insert, palperwslipior-lahel M; (which:

may. have :thereonuany informative :indicia.

,Eorrnegl-= in the ironteplate ll fltare, in i this .em-

bodiment oft-the invention,- tour. perforations 21,

Withnany. of'stheperfotationsjn .thelfront plate.

fit esp ints ithe i5 'lheseenerfgiationslare howevereidenucal; iandaa igia'ttathit fs y'its' t he PM??? steels; Mat el fie s aiememly we r s el "t e199: ilqc iqaa eiv qblett 'aneqva n on 'efsidjes i n' certain a face yiew of a. inod-iiiedform of' f rontside yiew of another modified the rig-ht hand side of th back plate ll ,alnethreey erz-l forations 3|, 32, 33, which are out of registry on is formed, as shown in Fig. 3, with its legs" apart, and with a card 20 therebetween. The- I legs or plates I0, II are then urged, pressed or struck inwardly, this being as the parts are either verticaliy disposed, as seen in Figs. 3, 4, or as said parts are horizontally positioned. Pressure may be applied to the outer faces of the plates II), I I by any means, itbeing clear that when one plate, as In, is disposed on a support, the pressure means on the opposite or upper plate I I ma then be in the form of any weight.

As the point 26 of the punch I6 engages a sheet j metal plate II, a depression is first made, then.

as the punch advances, cuts are made from the depression .by the angles or edges between the facets I8. But when the prongs H are formed, on completion of a punching function, it is a feature of the arrangement that, because of said initial depression, the tip portions of said prongs are turned partly outwardly.

The arrangement then gives a very and secure series of functions, this being with the entry of the prongs II, which are of the nature of tacks, intothe paperboard or cardboard 2!], and with the meeting of said tips against the opposing anvil or plate portions.

This is illustrated graphically in Fig. '7, although in some places the drawings are slightly exaggerated, for clarity of disclosure. vAs the pongs ll of a plate III, at an aperture 2|, reach a plate 33, said prongs are first turned outwardly, and then at least slightly backwardly to form a secure grip. In the assembled position, the prong tips of a front plate grip the rear side of an interposed card, and the prong tips of a back plate grip the opposite or front side of said card, thus making detachment of the plates from the intact card impossible.

Certain variations of structure or different embodiments of theinvention are also herein disclosed, and in the device of Figs. 8 and 9 the legs 2 I and 2I I are substantially similar to the aforesaid clip legs, I0, I I. The legs 2IIJ, 2I I, with. their juncture 2 I4, are spring constructed and dependable I arranged in closed position, so that in order to receive a paperboard unit said legs may be sprung apart. Since in this embodiment the plate 2 I0 is indented at one side, as shown, while the plate 2H is indented at the other side, a fingerpiece 36 is thereby provided on the plate 2| I, and a manipulating portion or fingerpiece 31 on the plate 2I0.

After the plates 2III, 2IIl have been sprung apart, and with a unit to be clamped, such as a unit 20, placed between the opposed prongs, said legs are allowed to return to the closed position; after which pressure may be applied in any manner to the outer sides of said plates, to secure the assembled results, as hereinbefore described.

In Figs. 10, 11 another embodiment of this in-; vention is illustrated, and in this latter case front the legs having therein said apertures.

and back legs 3m, 3| I, with a juncture 3, are provided. The clip of this embodiment has a fingerpiece 336 on one leg 3I0, and a manipulating part 331., on the other leg. The result obtained with, and the functioning given by the embodiment of Figs. 10-, 11 are similar to those of the second embodiment, some features of these two embodiments, and of the others, being the same.

In the embodiment of; Figs; 12 13,- apertures 2|, 33 are shown, and'these are identical with similar features, as already identified in other figures, these apertures having also a plurality of prongs thereat.

In the disclosure referred to in the immediately preceding paragraph, a paper or fibrous unit 420, is shown with plural sheets or card members, and this unit is gripped by legs 4H], 4H of the clip, The clip may be vended as a separate article, the legs 4H), 4 being spaced apart, as in Fig. 3,'after which said legs may be pressed manually inwardly, by the fingers of a user, into holding relation with the members 420.

Variations other than those specified may be resorted to within the scope of the invention and parts of the improvements may be used without others.

I claim:

1. A paper clip comprising a piece of sheet metal having a medial fold line and bent thereon -to provide opposite portions, each portion having registry, and a set of prongs projecting inwardly from the boundary edge of each aperture, the prongs of each 'set having the main portions thereof disposed substantially at right angles to the plane of the sheet portion, said prongs having expanded or radially outwardly turned points, whereby each set may penetrate the paper being clipped, so that the-points may then meet the opposite sheet portionwhereby said points may then expand farther outwardly on the same plane.

3. In a paper clip, a fiat sheet metal plate having therein a circular aperture with a set of prongs on the boundary edge of the aperture, the prongs having their main parts at substantially right angles to the plate, said prongs including base portions and points, the base portions having combined dimensions which reach around said edge, and the points being extended slightly outwardly on a circular'line having a greater diameter than that of the circle.

4. In a paper clip comprising a, flat plate of rigid material with a circular aperture therein, five prongs as elements of said, plate,.said prongs being projected fromthe boundary edge of the aperture, each prong having an outwardly turned point and a base equal to one-fifth of the circumference of the circle.

5. A paper clip comprising a piece of resilient sheet material having two legs disposed in substantially engaging relation, there being a fold line between the legs on which. the material is bent, each leg having therein an aperture with a set of prongs on the boundary edge of each aperture, said prongs having outwardly inclined points, a fingerpiece on one leg near the fold line, and a fingerpiece on the other leg near said line, each leg having an indentation opposite'the fingerpiece on the opposite leg, so that said legs may be urged apart by the fingers of a user to admit a work paper between the points of said sets.

6. A clasp fastener for a thin sheet workpiece, comprising a strip of resilient sheet metal having two adjoining legs, one of said legs having therein a circular aperture, at least two prongs projecting inwardly from the boundary edge of the aperture, said prongs having their points substantially touching the otherv leg, and finger-pieces on one transverse line of said legs, each leg having therein an indentation opposite the fingerpiece of the other leg.

7. A clip fastener fora paper workpiece, comprising a strip of sheet metal having-twoadjoining legs, the strip being bent" upon itself at an intermediate line to provide said legs, one of said 

